3.Depth of nitration case:0.5-0.8mm

4.Hardness of nitration: 950-1020HV

5.Fragility of nitration: Less than grade 1

6.Roughness of the surface:Ra 0.4um

7.Linearity of the screw:0.015mm

8.Chromium-plating layer thickness:0.03-0.08mm

9.The surface hard chromium plating hardness after nitrogenation:>=950HV

10.Guarantee: Common Nitrided: approx 2 years     Bimetallic : much longer lifetime

Our company is specialized in the production of planetary extruder and planetary screw barrrel sole enterprise in

Zhoushan. The company also can according to the requirements of the customers, equipped with special parts.

The company will provide the high quality service, and sincerely welcomes you to inquiry.